SU712770A1

SU712770A1 - High-voltage pulsed voltmeter

Info

Publication number: SU712770A1
Application number: SU742084601A
Authority: SU
Inventors: Владимир Федорович Терехов; Леонид Васильевич Дюков
Original assignee: Предприятие П/Я Г-4135
Priority date: 1974-12-17
Filing date: 1974-12-17
Publication date: 1980-01-30

Description

22, включенный между общим выводом второй группы резисторов 18-21 и резистором 3 делител напр жени 1.22, connected between the common terminal of the second group of resistors 18-21 and the resistor 3 of the voltage divider 1.

Вольтметр работает следующим образом.The voltmeter works as follows.

При приложении импульсного напр жени к делителю 1 конденсаторы 10-13 через диоды 5-9 зар жаютс до напр жени , онредел емого сопротивлением резистора 3 делител 1. В иаузе между импульсами конденсаторы 10-13 разр жаютс через разделительные резисторы 14-17 и 18-21 на измерительный прибор 22.When a pulse voltage is applied to the divider 1, the capacitors 10-13 through the diodes 5-9 are charged until the voltage determined by the resistance of the resistor 3 of the divider 1. In the output between pulses, the capacitors 10-13 are discharged through the separation resistors 14-17 and 18- 21 to the gauge 22.

Точка подсоединени второго зажима прибора 22 к резистору 3 делител выбираетс таким образом, чтобы ток через измерительный прибор во врем импульса был равен току через прибор в паузе между импульсами . Благодар этому устран етс погрешность прибора из-за импульсной составл ющей тока в цепи измерительного прибора, значение которой увеличиваетс с уменьшением скважности измер емых импульсов .The connection point of the second terminal of the device 22 to the resistor 3 of the divider is selected so that the current through the measuring device during the pulse is equal to the current through the device in the pause between the pulses. Due to this, the error of the device is eliminated due to the pulse component of the current in the circuit of the measuring device, the value of which increases with a decrease in the duty cycle of the measured pulses.

Дл исключени погрешности прибора от напр жени обратной пол рности, если таковое присутствует в паузе между импульсами в измер емой цепи, 1 еобходимо подключить параллельно резистору 3 делител напр жени диод с пол рностью, обратной нол рности измер емого напр жени .To eliminate the error of the device from the voltage of reverse polarity, if it is present in the pause between pulses in the measured circuit, 1 It is necessary to connect a voltage divider in parallel to the resistor 3 with a polarity inverse to the polarity of the measured voltage.

Данна схема вольтметра позвол ет резко сократить число диодов по отношениюThis voltmeter circuit makes it possible to drastically reduce the number of diodes relative to

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к их числу в известном вольтметре и снизить ошибку при измерении амплитуды импульсов малой скважности н тем самым расширить диапазон измерени по скважности импульсов.to their number in a known voltmeter and to reduce the error in measuring the amplitude of pulses of small porosity and thereby expand the range of measurement on the porosity of pulses.

Claims

Invention Formula

A high-voltage pulse voltmeter containing a voltage divider, parallel to the lower arm of which a multi-link capacitive storage device, made in the form of a series and alternate connection of diodes and capacitors, is connected, and a measuring device, characterized in that in order to expand the limits of measurement and increase reliability, it is equipped with two groups of resistors, of which the resistors of the first group are connected respectively to the plates of capacitors of a capacitive storage with a voltage of one polarity and to a common zero shnne voltmeter, and a second group of resistors connected respectively to the plates of the capacitors of the capacitive storage means voltage with the opposite polarity to the first terminal and the measuring device, wherein the second clamp meter is connected to the lower part nlecha divider.

Sources of information taken into account during the examination 1. USSR Author's Certificate No. 213180, cl. G OIR 19/04, 1966.V

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